FR 776 then LA 5782 at Barcelona
Venezia → Barcelona → Santiago de Compostela
Timetable, Barcelona time
17:40FR 776 from Venezia at the gate
16:00LA 5782 to Santiago de Compostela leaves the gate
22 h 20 apart on the timetable, overnight
LA 5782 leaves 22 h 20 after FR 776 arrives on the timetable: more than half a day, so not a connection we count.